Discussion With the direct interaction between energy and the material, heat is generated within the material and throughout its mass. This can significantly increase heating rates and reduce heating time (Tang and Wang. 2007). process based on RF ener- gy has great potential as a food pasteurization and sterilization tech nique, there are limited studies of effectiveness of RF heating on pathogenic microorganisms in foods. In the present study. RF treat- ment rapidly increased temperatures of black and red pepper high enough to inactivate pathogens. RF treatment for two types of